A Phenological Simulation of the Striped Rice Borer, Chilo suppressalis (Walker), Life System

이화명나방 발생의 Phenological Simulation에 관한 연구

  • Song Yoo Han ;
  • Choi Seung Yoon ;
  • Hyun Jai Sun ;
  • Kim Chang Hyo
  • 송유한 ;
  • 최승윤 ;
  • 현재선 ;
  • 김창효
  • Published : 1982.12.01

Abstract

A computer simulation model was constructed to explore the phonology of the Striped Rice Borer, Chilo suppressalis (Walker), in Korea. The phenological system model based on the concept of distributed time delay was written in the computer program 'INSECT' and simulated with the estimated parameters of the effective day-degrees (DEL) and the order of time delay (K) for determining the validity of the system model. The accumulated emergence curves obtained from the phenological model were slightly different from the observed light trap data at the early and late stage of the moth emergence in 1978. The differences between observed and simulated $50\%$ emergence date were five to six days in the locations of Suweon and Chuncheon, while it was only two to three days in Iri, Daegu, Boseong, and Milyang. The phenological model should be further improved for simulation of field population changes by adding the information of the time delay process in each developmental stage, the age distribution of overwintered population, and the limiting factors of the borer mortality.

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